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Water and solute flow through mung bean roots under applied pressure
Author(s) -
Salim M.,
Pitman M. G.
Publication year - 1984
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1984.tb05907.x
Subject(s) - mung bean , hydrostatic pressure , salt (chemistry) , water flow , salinity , botany , plant roots , flow (mathematics) , drought resistance , horticulture , biology , chemistry , agronomy , environmental science , mathematics , soil science , physics , mechanics , ecology , geometry
The technique of applying hydrostatic pressure on the root medium to study water and solute flows through excised plant roots and to study various characteristics of roots in relation to flow has been used by many workers but flows in excised roots have not been compared with those in intact transpiring plants. In the present study this comparison has been made using mung bean roots. Results show that excised roots under pressure lack the ion selectivity which is observed in intact plant roots and conduct salt many times higher than salt flows through intact plant roots. The role of stem resistance in the rates of water and salt flow through roots has been discussed. The suitability of this technique for solute flow studies through mung bean roots is questioned.